| Co-Investigator(Kenkyū-buntansha) |
HORII Tatsuo IBARAKI UNIVERSITY, TECHNICAL JUNIOR COLLEGE, RESEARCH ASSOCIATE, 工業短期大学部, 助手 (80114023)
KURIHARA Kazumi IBARAKI UNIVERSITY, FACULTY OF ENGINEERING, RESEARCH ASSOCIATE, 工学部, 助手 (30143142)
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| Budget Amount *help |
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1987: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1986: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Research Abstract |
The author designed two-phase, two-pole hysteresis motor with the operated frequency 300Hz, the rated output 1kW, 18,000r.p.m. in 1986. The specifications of both stator and rotor are made on the basis of the results of the basic research due to the author. In particular, Fe-Cr-Co magnet steel is used in the rotor ring, of which the author designed the magnetic constants so that the optimum motor performance is obtained, i.e., Hc=3000e, Br>15kG.
The tested motor is driven by the sinusoidal wave, square wave, PWM wave due to the voltage source inverter. The author measured the synchronous pull-out, starting and vibration characteristics of the tested motor and analyzed its synchronous pull-out characteristics, from 1986 to 1987. In general, the torque of the hysteresis motor reduced largely by the effects of higher harmonics. Therefore, it is important to predict the performance of the hysteresis motor driven by square wave voltage source inverter.
This study can be summarized as follows.
(1) The author describes the analysis extending in general case, considering higher harmonics in both space and time, in synchronous pull-out. It is made clear that the agreement between predicted and measured values is good. (2) It is made clear quantitatively that vibratory acceleration becomes large in the order, sinusoidal wave, square wave, PWM wave. Further, those frequency spectra are made clear.
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